Useful video AI serves a defined scenario: separate people from vehicles, detect a line crossing, report prolonged presence or retrieve footage faster. A calibrated rule reduces noise; a poorly designed one increases alerts and privacy risk.
Key points
- Link every rule to a human action.
- Test day, night, rain and busy periods.
- Avoid biometrics when anonymous detection is enough.
- Measure useful alerts and refine settings.
Regulatory content reviewed on 8 September 2026. Check official sources for your specific situation.
AI is a filter, not a guarantee
Analytics classifies shapes and paths but does not understand context like a person.
Define the event, recipient and expected action first.
- Event
- Area
- Schedule
- Recipient
- Action
People and vehicles
Classification can reduce irrelevant motion and speed up searches.
Occlusion, light and distance still cause errors, so visual verification remains important.
- Filter motion
- Separate flows
- Search faster
- Human verification
Lines, zones and dwell time
A line suits directional passage, a zone suits a protected area and dwell time suits unusual duration.
Follow real boundaries and operating schedules.
| Analytics | Useful for | Common error | Validation |
|---|---|---|---|
| Classification | Filter motion | Overconfidence | Review clips |
| Line crossing | Directional access | Line at frame edge | Path tests |
| Zone intrusion | Perimeter | Area too broad | Night and weather |
| Dwell time | Sensitive area | Arbitrary delay | Observe normal use |
Object and attribute search
Colour, direction or vehicle type may speed retrieval but do not provide certain identification.
Abandoned-object rules perform better in stable scenes than crowded lobbies.
- Faster retrieval
- Approximate attributes
- Stable scene
- Traceable export
Plates and biometrics
Plate recognition needs a clear purpose, restricted access and a dedicated angle.
Face recognition processes biometric data for unique identification and requires separate legal assessment.
- Purpose
- Restricted access
- Retention
- No biometrics by default
Actionable alert design
Include context before and after the event and state priority clearly.
Start with few rules and improve them using the ratio of relevant alerts.
- Context
- Priority
- Owner
- Feedback loop
Privacy and security
Record controller, purpose, field of view, retention and information duties for the Belgian context.
Secure accounts, metadata and networks; avoid an unmanaged parallel dataset.
- Proportionality
- Transparency
- Access rights
- Cybersecurity
- Review
FAQ
Does AI remove every false alert?
No. Calibration and real-world testing remain necessary.
Can a camera detect a person without recognising a face?
Yes. Anonymous person classification is distinct from unique identification.
Will plate reading work with any camera?
Reliable results usually need a dedicated angle, exposure and scene.
Should every analytic be enabled?
No. Enable only rules with a defined purpose and response process.
